Shifting pulley



Unirse S'sernrns Farrar Ormes.

` ADOLPH BERRENBERG, OF BOSTON, MASSACHUSETTS.

SHIFTING PULLEY.

SPECIFICATION forming part 'of Letters Patentv No. 305,417, datedSeptember 23, 1884.

Application filed January 28, 1884.

To all A1li/tom, it may concern,.-

Be it known that l, ADOLPH BERRENBERG, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Shifting Pulleys, of which the following is a full,clear, and eX- act description.

This invention consists in such anarrangement of a pulley in connectionwith its shaft and an independent support that the pulley can bemovedfrom such support onto and engage with its shaft, and be moved off itsshaft onto its support, disengaging with its shaft, all substantially ashereinafter fully described, reference being had to the accompanyingplate of drawings, in which'- Figure l is a side View of a pulley on itsshaft, and showing this invention attached thereto; Fig. 2, a verticallongitudinal section on line of the shaft; Fig. 3, a vertical crosssection; and Fig. 4, asimilarvertical longitudinal section to Fig. 2,but with a change of position of the pulley, to be hereinafterdescribed.

In the drawings, A B represent two shafthangers, secured to the floor Cin any of the usual ways, and in the bearings D E of which is adapted torevolve the horizontal shaft F, to be driven in any suitable manner.

G is a pulley having an extended hub, H, in which is a centralcone-shaped socket, J, arranged to fit the periphery of the coneshapedextension K of the bearing E of the hanger B. The pulley G also hasanother central cone-shaped socket, L, on its opposite side to and in areverse direction from its cone-shaped socket J, which socket Lisadapted to iit the periphery of the cone-shape bearing M of the shaft F.The shaft being revolved in any suitable manner, if not using the pulleyG, it is moved onto the cone K of thebearing E, as shown, in Figs. 1 to3-that is, the pulley is at rest upon such cone, as

shown more particularly in Fig. 2, and, being free from contact, doesnot turn with the shaft. When desirous of revolving the pulley, move itfrom its support on the cone K onto the cone M of the shaft F, by whichmo- (No model.)

tion will be communicated to the pulley from the shaft. 5o

To move the pulley for the purposes described, a lever, N, pivoted at ato an arm, P, of the hanger B, is provided, which eX- tends around thehub H of the pulley, and

terminates ina handle, Q, below, for conven- 5 5 ience in operating thelever. Screwing into the leveruN, at b, are two screws, R, which`project `into and play loosely in a circumferentialgroove, S, in the hubof the pulley.

Through this pin-.connection R, swinging the 6o lever N to the leftmoves the pulley from its support onto the shaft, and swinging itto theright moves it back onto its support.

Power can be communicated by a belt from the pulley to any other shaft,or to drive any machine, as desired.

A pulley constructed and arranged to be engaged with and disengaged fromits driving-shaft, as herein described, dispenses with the loose pulleyusually accompanying its 7o driving-pulley, for when not using the shaftor the machine driven from such an arranged pulley the pulley moved ontoit-s support on the hanger-bearing becomes stationary, the

driven shaft or machine and the belt connect- 7 5 is simple andpractical.

Having thus described my invention, what I claim is- 1. The combination,with apulley adapted to t a cone-shaped bearing, M, on a shaft, and

a cone-shaped bearing, K, on an independent 9o support, of means formoving said pulley from one to the other, and vice versa, substantiallyasV and for the purpose specified.

2. The combination,with apulley adapted to 'fit a cone-shaped bearing,M, on a shaft, and 95 a cone-shaped bearing, K, on an independentsupport, iof a pivoted lever, N, engaging with In testimony whereofl Ihave hereunto set said pulley for operation substantially as and my handin the presence of two subscribing for the purpose specified. Witnesses.v 3. The oombinationmithapulley adaptedto 5 ,t a cone-shaped bearing, M,on a shaft, and ADOLPH BERRENBERG.

a cone-shaped bearing, K, on an independent U support, of a pivotedlever, N, engaging'by e Witnesses: pin, R, in aeireumferential groove,S, in seid EDWIN W. BROWN,

- pulley, substantially as and for the'purpose WM. S. BELLOWS. [ospecied.

